A Few Calculators : Notes from the Oesper Collections, No. 43, March/April 2017

“Comptometer” hand-cranked mechanical calculator.

A circa 1930 American-made “Comptometer”
hand-cranked mechanical calculator.

Issue 43 gives a brief overview of some of the desktop and hand-held calculators used by chemists over the years and currently on display in the hallway outside of the Oesper Collections in Rieveschl Hall.

Click here for all other issues of Notes from the Oesper Collections and to explore the Jensen-Thomas Apparatus Collection.